Electric relay.



, J. B. CRIPFEN.

ELECTRIC RE AY. APPLICATION FILED IAY I4. l9l2- RENEWED OCT. 30. i9l6.

1,228,097; Patented May 29, 1917.

[NVENTOR UNITED STATES PATENT OFFICE.

JAMES B. CRIIIEN, OF CHICAGO, ILLINOIS, ASSIGNOR, BY MESNE ASSIGNMENTS, T0 GENERAL ENGINEERING AND CONSTRUCTION COMPANY, LIMITED, OI TORONTO,

CANADA, A CORPORATION OF ONTARIO.

ELECTRIC RELAY.

Specification of Letters Patent.

Patented May 29, 1917.

Application filed May 14, 1912, Serial No. 697,148. Renewed October 30, 1916. Serial No. 128.638.

To all whom it may concern:

Be it known that 1, Jenna B. Cinrrrm, a citizen of the United States of America, and a resident of Chicago, county of Cook, and State of Illinois, have invented a ,new and useful Improvement. in. Electric Relays, of which the following is a specification.

My invention pertains to electric relays. lVIy object is to produce anelectric relay which (.a) will have a tensionless armature with but two positions of rest, (1)) will reverse the position of its armature when infiuenced by a brief current flowing through 'its controlling helix in a predetermined or first direction, (cl 'will maintain its arma ture in either position indefinitely when not influenced by line currents, and ((1) will maintain its armature at rest in either position despite the influence of current through its line helix in the reverse or second direction. 'My relay is designed rimurily fonuse in systems of printing to egraphy, but its use is not necessarily so limited.

I provide a polarized relay having an elec tromagnetic field, and therefore having both line and field helices, the line helix being the helix for controlling the movements of the armature. In this relay, I provide contacts upon the armature for reversim the directron of the electric current through the field helix, whereby by the movement of the armature the magnetic polarization of the field is reversed. In addition, provide upon the armature such electric contact elements as maybe required to operate local or controlled circuits. The arrangement of parts thus attained reversesthe polarization of the. magnetic fieldof the relay whenever the arinature is reversed in position, thus reversing the polar condition of the relay with reference to the line, so that, instead of requiring a reverse current to return the armature to its initial position, it requires an other impulse of current in the same direction as that which moved the armature from its initial position.

In the drawings, Fig. 1 shows an elevation of my relay. Fig. 2 shows a diagram of the magnetic and electric elements. Fi 3 shows a modification. In these figures, like numerals refer to like parts throughout.

Upon the yoke 1, the magnets 2 and 3 and the helix 4 are rigidly mounted. The corecomes obvious that the art1 or. if the nrnnature 5 pivoted upon the yoke l and is positioned within the helix 4. The helix fl is the field helix; the helices 21 and 31 ointly, form the line helix or controlling helix of the relay. The yoke, cores and armature are of soft iron, substnntiQlly without permanent ma etism, acquiring all their magnetic qualities from the currents flowing in the helices associated with them.

The helices 21 and 31 are so connected in the line wire (2-43 that when acurrentflows in the wired-6 the magnets 2nd 3' will present poles of oppositemagnetic polarity to the core-armature 5. As the part 5 also is polarized by current throu h the helix 4, the polurit of the part 5 wi cause it to repel one am attract the other of the poles presented by magnets 2 and 3.

At this point in the description, it be- H acts magnetically only to influence thefeificienc of the re uttaiuedif the'partYwi'e omitted relay'lsince ,all the functions, escribcd wou part 1 were made ,of non-magnetic mxfitfilllll, acting as a mechanical support 0 y 7 p As Fig. 2 is to reverse its armature m response team impulse of positive current from 6' to (VT in the line conductor. As the figureis'drawn, cur rent flows from positive polej'iofbattery 7 through contact 9 and armature} and upward throu h helin: 4,.prodncing'faf south magnetic .o e at theffree'endofthearmm' ture 5. T llS polarization iirill the. end of the armature5 td'attract the nearer of the two free poles'of magnets faand 3, resulting in holding the armature motionless when not influenced b' line currents. A currentin the line con nctor flowin from 6' to 6 will produce'a' south "pole-at t 'e free end of magnet 3 and a north pole at the free end of magnet 2, thus" attractingfthearmature 5 toward core 2 and repelling it from the core of ma "et 3-. The armature 5 will remain motion es's under the influence of I y so drawn, the relay is adjusted attracting 5 toward 3, moving 5 and changing llS electrical contact engagement from :J to 10, breaking the circuit of 4 and '7 and rinsing a circuit including 4 and 8. By this ruangc, current is permitted to flow through should have become neutral (or reversed un-' der the influence of current in helix 4) so that the armature 5 will attract that core and will maintain its new position a ainst the magnet 3 until a subsequent impu se in the same direction operates to restore the armature 5 to its initial position.

The subsequent impulse, flowing from 6 to 6 in the line conductor, produces as before a south pole on the free end of the coreof magnet2 and a north pole on the free end of the core of magnet 3. As the free end of armature 5 now is north, 5 will be attracted by 2 and repelled by 3, resulting in its movemeht. back to its initial position, with dental reversal of its polarity, so that the next-sub uent line current from 6 to 6' will reverse it liut all line currents from 6' to 6 will leave it'motionless. 1

It becomes manifest that a long continued current from 6 to 6 will result in a buzzing or continued vibration of the armature 5;

Preferablgthe armature 5 is reversed by impulses uniform in duration. That the armature 5 ma swing at a speed, in keeping with itscontro mg impulsw, I'may provide witnesses, this 14th an adjusting means, such as 11 of Fig. 3, which shows an adjustable weight upon a pendulum armature. The magnetic lag of the relay also contributes t0-thc limitation of the duration of the controlling impulse. and offers a further method of adjustment.

The contacts for controlled circuits may be carried by the armature 5 in any desired manner. In Fig. 2 I show a set of three tact elements, 12, 13, 1- the element 13 being reached'electrically by a flexible tensionlcss conductor from the fixed binding post 13'; in Fig. 3 I show the t-ontac'telements upon opposite ends of the arn'iature.

In mechanical embodiment, the form of my improved relay may be varied greatly.

\Vhat I claim as new and desire to obtain by United States Letters Patent is:

1. In an' electric relay, an armature, a polarizing coil surrounding a portion of said armature, a pair of actuating coils each adjacent to said armature and not in electric contact with said polarizing coil, and meaiis for reversing the direction of current flow through said polarizing coil when said armature is actuated by said actuating coils.

2. In an electric relay, an armature, a

polarizing coil for said armature, a source I of current for energizing said coil, :1. pair of armature actuating coils, a separate source of alternating current for energizing said actuating coils, and ineans for reversing the direction of current flowthrough said polarizing coil when said armature is actuated by said actuating coils.

Si ed by me at Chicago, county of Cook and tate of Illinois in the presence of two day of July 1911.

JAMES B. pRIPPEN.

Witnesses:

Lswmmon J. Warsn, GABL'V. WISNER. 

